Crassula ovata, the Jade plant, and Portulacaria afra (aka African portulaca, dwarf jade) are different in some ways though....Portulacaria can survive hot hot hot once densely leaved and established (older leaves go into CAM synthesis for energy, which is common in hot desert plants) but the younger leaves on younger plants aren't as efficient. Portulacaria is tougher than the Crassula. Crassula cuttings also don't really produce or keep leaves until a good root system has been established.
